Audi 100

1982-1990 of release

Repair and operation of the car




Audi 100
+ 1.1. Governing bodies and devices
+ 2. Technical characteristics
+ 3. Engines
+ 4. Cooling system
+ 5. Exhaust system
+ 6. Power supply system
+ 7. Transmission
+ 8. Running gear
+ 9. Steering
+ 10. Brake system
+ 11. Body
- 12. Electric equipment
   + 12.1. System of electric equipment
   - 12.2. System of ignition
      + 12.2.1. Transistor system of ignition
      - 12.2.2. Electronic system of ignition
         12.2.2.1. Check of the coil of ignition
         12.2.2.2. Check of the sensor of a corner of an advancing of ignition
         12.2.2.3. Check of the sensor of frequency of rotation of a cranked shaft
         12.2.2.4. Sensor of a corner of an advancing of ignition, frequency of rotation of a cranked shaft
         12.2.2.5. Check and replacement of the sensor of air temperature
         12.2.2.6. Check of the sensor of temperature of cooling liquid
         12.2.2.7. Switches of the mode of idling and opening of a butterfly valve
         12.2.2.8. Check of the sensor of the Hall
         12.2.2.9. Check of the control unit
      12.2.3. Contactless system of ignition of FEI
   + 12.3. Electric circuits










12.2.2. Electronic system of ignition

12.2.2.1. Check of the coil of ignition

GENERAL INFORMATION

Elements of electronic system of ignition

1 – sensor of frequency of rotation cranked
shaft;
2 – ignition advancing corner sensor;
3 – detonation sensor;
4 – ignition distributor;
5 – thermoswitch;
6 – idling stabilizer;
7 – idling mode switch;
8 – switch of full opening
butterfly valve;

9 – air temperature sensor;
10 – control unit;
11 – vacuum tube;
12 – ignition coil;
13 – perepuskny valve;
14 – connecting block;
15 – the sensor of provision of a pedal of a brake (for cars with automatic transmission);
16 – combination of devices

Check of resistance of a secondary winding of the coil of ignition of the first type

1 – ignition coil;

2 – 1 plug;

3 – high-voltage plug;

4 – 15 plug

Suspension bracket of connecting blocks on an arm

1 – ignition advancing corner sensor block; black color;

2 – block of the sensor of frequency of rotation of a cranked shaft; gray color;

3 – detonation sensor block; red color;

4 – 4 plug

The ignition coil installed on the car can be two types.

PERFORMANCE ORDER
1. To disconnect high-voltage and low-voltage wires from the ignition coil.
2. To connect an ohmmeter and to measure resistance of a secondary winding. It has to be for the coil of the first type of 6,8 kOhm, for the coil of the second type – 7,7 kOhm.
3. To connect an ohmmeter to plugs 2 and 4 or 2 and 3 and to measure resistance of primary winding. It has to be 0,5–1,5 Ohms for both types of coils.
4. If resistance of secondary and primary windings differs from specified, the coil needs to be replaced.